package com.zyf.heixiang.config;

import com.github.xiaoymin.knife4j.spring.annotations.EnableKnife4j;
import com.zyf.heixiang.common.JacksonObjectMapper;
import lombok.extern.slf4j.Slf4j;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;
import springfox.documentation.swagger2.annotations.EnableSwagger2;

import java.util.List;

@Slf4j
@Configuration
@EnableSwagger2
@EnableKnife4j
public class WebMvcConfig extends WebMvcConfigurationSupport {

   /**
    * 设置静态资源映射
    * @param registry
    */
   @Override
   protected void addResourceHandlers(ResourceHandlerRegistry registry) {
      log.info("开始进行静态资源映射...");
      registry.addResourceHandler("doc.html").addResourceLocations("classpath:/META-INF/resources/");
      registry.addResourceHandler("/webjars/**").addResourceLocations("classpath:/META-INF/resources/webjars/");
      registry.addResourceHandler("/backend/**").addResourceLocations("classpath:/backend/");
      registry.addResourceHandler("/front/**").addResourceLocations("classpath:/front/");
   }

   /**
    * 扩展mvc框架的消息转换器
    * @param converters
    */
   @Override
   protected void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
      log.info("扩展消息转换器...");
      //创建消息转换器对象
      MappingJackson2HttpMessageConverter messageConverter = new MappingJackson2HttpMessageConverter();
      //设置对象转换器，底层使用Jackson将Java对象转为json
      messageConverter.setObjectMapper(new JacksonObjectMapper());
      //将上面的消息转换器对象追加到mvc框架的转换器集合中
      converters.add(0,messageConverter);
   }

   @Bean
   public Docket createRestApi() {
      // 文档类型
      return new Docket(DocumentationType.SWAGGER_2)
              .apiInfo(apiInfo())
              .select()
              .apis(RequestHandlerSelectors.basePackage("com.itheima.reggie.controller"))
              .paths(PathSelectors.any())
              .build();
   }

   private ApiInfo apiInfo() {
      return new ApiInfoBuilder()
              .title("瑞吉外卖")
              .version("1.0")
              .license("ywl")
              .description("瑞吉外卖接口文档")
              .build();
   }
}
